Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5619184 | System for monitoring disaster prevention | Naoki Kosugi | 1997-04-08 |
| 5497009 | Photoelectric smoke sensor and fire detecting system, and sensitivity testing method therefor | Naoki Kosugi, Tetsuya Nagashima | 1996-03-05 |
| 5436614 | Thermal analog fire detector | Hiromitsu Ishii | 1995-07-25 |
| 5254975 | Compensation type heat sensor | — | 1993-10-19 |